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Luca, You're asking a pretty open ended question of the Moz community. If you're serious about wanting constructive feedback, you'd be better off hiring someone to do a thorough analysis of your website and its supporting processes so they could come up with some worthwhile and actionable recommendations. You might get onesy-twosy suggestions from this post, but it sounds like you might need something more thorough and exhaustive. Moz has 58 recommended companies on a list you can peruse. You could also go thru the Q&A and blog looking for people who are experts in this area and put feelers out to them. Otherwise, I'd suggest you post a more specific question as it might incent more responses. Good luck!

Hi Becky, I found adding 200-300 words for the category pages worked best for my ecom site. I use 400-500 words for the main body on the products I sell. I (somehow) ranked number one on Google the previous 2 years based on organic content writing - no backlinks My ecom site is LikeChimp.com - you can see how I use good content to rank, check out the page categories vs the product description: http://likechimp.com/product-category/buy-facebook-event-attendees/# Hope this helps.

Thanks!

Thank you Marcus !

Thanks James, you know your stuff!